It's just a flat green disc, nothing readable on it any longer...happens quite a bit up here with those coppers under certain conditions. Will never know...
Even with lost metal through corrosion its too light for a William III. I would say a George II. If you give me the exact Diameter, I will narrow it down?
OK....OK......you guys are indeed awesome!! But ya know....wearing shorts and a tee shirt beats what you guys were wearing any day ... and I don't have to use a chisel ... only a little fork to dip the lobsters in butter!!! Yummy!! Nice find! GD